The U.S. is seriously concerned about the supply of the specific rare earth "samarium," exports of which China is restricting. 

That's bad news for Lockheed Martin.

The U.S. is seriously concerned about the supply of the specific rare earth "samarium," exports of which China is restricting. 

That's bad news for Lockheed Martin. 

https://www.nytimes.com/2025/06/09/business/china-rare-earth-samarium-fighter-jets.html

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Probably should have thought about that before starting a trade war with the whole world